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May 26, 1931. A. L. CULBERTSON WATER COOLED AGITATOR Filed July 27, 1926WM ,2. v

ATTORN EYS I INVENTOR '10 fluid through the main tube and its severalparts employed may be readily removed for Patented May 26, 1931 I UNITEDSTATES- PATENT; omen ALBERT It. GULBERTSQN, OF MOUNT VERNON, OHIO;ASSIGNOR\, BY MESNE ASSIGN MENTs. TO, THE TION or OHIO Application filedJ'u1y127,

. The invention relates to the watercooling oli tubular members, suchas. the a itator arms; employed for conditioning the ire'bed of a g s poducer, having-'fingersor o her imil branch members extending h re r halso should be subjected to theaction of the co0Iing-fluid.- I

The primary object of the invention is to provide for the circulation ofthe cooling fingers or branch members in such manner as to insure thatall the above parts will be uniformly and adequately cooled. Anotherobject of the invention is to provide a construction of the'above naturein which the various replacement or repair.

Further objects and advantages of the invention will be in part obviousand in part specifically pointed out in the description hereinaftercontained which, taken in conjunction with the accompanying drawings,discloses a preferred embodiment thereof. Such embodiment, however, is.to be considered as merely illustrative, of its principles. In thedrawings- Fig. 1 is a side elevation partly in section of an agitatorconstructed inaccordance with the invention. 7 V

Fig. 2 is an end elevation of the structure shown in Fig. 1. l 7

Fig. 3 is an enlarged longitudinal section of one end of the agitatorshown in Fig.1.

Fig. 4 is an enlarged side view partly in section of a fitting adaptedto be employed in carrying out the invention;

Fig. 5 is an end elevation of the structure shown in Fig. 4.

The invention is illustrated. as applied to an agitating member havinga'vertical stem 1 providedwith a tee coupling 2 at its bottom end towhich coupling the horizontal agitator arms 3 are attached. In use suchan agitator is turned around slowly in the surface of a gas producerfire bed or the like, and the arms 3 are provided with fingers 4, whichproject down into the fire bed and serve to condition the latter morethoroughly. Cooling water for the agitator is supplied through a pipe 5in the stem 1 which leads to pipes 6 WATER-casino AGITATOB,

onArMANsTnm ooMrAnY, on MOUNT venison, onro, A UORPQBA- 1926. SeriaI No.125,282.

within the horizontal arms 8, the cooling water usually-returning.through the annular space -7 between thestem 1 and pipe 5, afte1;passing through; the agitator arms and fingers. V r v 1 Inaccordancewith the present-invention the cooling fluid is caused to pass inseries? or successively through the various fingers or branchv members.4:; which are. associated withthe respective agitator arms,- theeoolsing water first passing-through'pipes 5 and 6 to. the outerend of eachagitator arm and, then being guided-by suitablefittings to passsuccessively through the fingersorgbranoh members in its returntravel-from the outer ends of the agitator arms to theannular space 7v ns m 1. Of. co r he: ame u u e would permit. a reversal of the direction.OLE flow of the cooling fluid throughthe -agita-. tor-,jif desired,whereby the cooling water would flow in throughthe annular space 7 andout through pipe 5.. I y a P j H In he i lus r t e mb diment o hevention each branch 1 memberor finger 4 has associated: t erewi ha fiting pr vide with a head 8 which surrQ-llnds the. corresponding pipe. 6nd. obst cts t longit inalflqw, Qt Water thr ugh the ann la asp ce 9.between th eeitatpr' rm pieefi-s Ea h fitting furthermore is providedwith a stem; lQ which 7 projects down into the interior ofthecorresponding finger a d ha a pas age ay T communicating between theinterior of the finger ii; and the face ofhead 8....Thus with regard to.the arm 3, shown at the-righthand side of Figure 1, for example, thecooling fluid may flow from pipe 5. through pipe 6 Pipe 5..-

A path of travel of the above nature for the cooling water insures thateach finger 4 will be adequately served with cooling water, since allthe water passing through each arm 3 must pass through each finger whichis associated therewith. If the cooling water were passed in parallelthrough the several fingers 4, the flow through any particular fingercould be partially or entirely clogged without affecting the flow ofcooling water as a whole, and thus the finger would be more likely tobecome over-heated without any indication to the operator that thesupply of cooling water was inadequate.

Stems 10 preferably are restricted at their ends, as shown, to cause agreater velocity in the water issuing from them, thus more effectivelycarrying away deposits which tend to accumulate in the ends of thefingers.

As above stated, the invention also preferably includes certain featuresfacilitating the assembly, replacement or repair of the parts of theagitator. As shown, each fitting is slidable along its correspondingpipe 6, and the several fingers 4 are screwed into bosses 12 on the arms3. In assembling the parts the heads of the fittings may be passedthrough the holes in bosses 12 and strung along the corresponding pipe 6as the. arm 3 is pushed inwardly along the pipe, the arm 3 being finallysecured to the tee coupling 2. The fingers 4: are then screwed in placein bosses 12. The stems 10 of the fittings pref erably are provided withlugs 15 to space them properly from the walls of the fingers. Thefingers 4: of course may be unscrewed at an time for repairs andreplacements.

ile a specific embodiment of the invention has been disclosed it will beobvious that many changes may be made therein without departing fromitsprinciples, as defined in the appended claims. The principles of theinvention of course are also applicable to hollow members carryingheating instead of cooling fluids. Y

I claim:

1. In combination, a hollow firebed agitator member to be fluid cooledhaving hollow fingers spaced along the same, a fluid-conducting tubewithin said first-mentioned member, and fittings respectively coactingwith said fingers, said fittings having heads disposed within the hollowmember and enclosing the tube at points respectively adjacent thefingers, and also having passages extending through said heads to theinteriors of the corresponding fingers.

2. A water cooled firebed agitator mem: ber comprising an upwardlyextending stem, laterally directed arms extending therefrom, said stemhaving a cooling water pipe passing therethrough and said arms havingwater conducting tubes therewithin which are connected to said pipe,said arms also having hollow fingers projecting therefrom at pointsspaced along their lengths, and means for directing serially through thefingers carried by each of said arms, the water which flows through thecorresponding tube.

3. A firebed agitator for gas producers and the like having a hollowarm, hollow fingers projecting from said arm at points spaced along itslength, said fingers being detachably connected to said arm, a coolingwater pipe enclosed by said arm, fittings having heads enclosing saidpipe within said arm to obstruct the flow of cooling water along thearm, said fittings having stems respectlvely projecting into saidfittings, and said fittings being provided with passageways leading fromtheir heads through the stems to the interior of the fingers, to directcooling water serially through the fingers.

In testimony that I claim the foregoing, I have hereunto set my handthis 13th day of July, 1926.

ALBERT L. CULBERTSON.

